AC_MSG_RESULT(Will not be able to compile GUI. Please install the *liblablgtksourceview2-ocaml-dev* Debian package - or use the GODI caml package system *http://godi.ocaml-programming.de/* - or compile from sources *http://wwwfun.kurims.kyoto-u.ac.jp/soft/lsl/lablgtk.html*)